93 lines
3.3 KiB
Plaintext
93 lines
3.3 KiB
Plaintext
Extended bans
|
|
Jilles Tjoelker <jilles -at- stack.nl>
|
|
--------------------------------------
|
|
|
|
Extended bans (ban conditionals) allow different checks than the usual
|
|
nick!user@host or nick!user@ip match to determine whether someone should
|
|
be banned, quieted, exempted or invited.
|
|
|
|
Extended bans are of the form $[~]<type>[:<data>]. The <type> is one
|
|
character (case insensitive) and determines the type of match. Most types
|
|
allow or require an extra field <data>. If the tilde (~) is present, the
|
|
result of the comparison will be negated, unless the ban is invalid in which
|
|
case it will never match. Invalid bans are ones where <data> is missing but
|
|
required or where <data> is otherwise invalid as noted below.
|
|
|
|
Unless noted below, all types can be used with +b, +q, +e and +I.
|
|
|
|
If any extended ban types are loaded, they are listed in 005 (RPL_ISUPPORT)
|
|
as EXTBAN=$:<types>.
|
|
|
|
Local users cannot add extended bans of an unknown type or invalid bans. If a
|
|
remote user adds an extended ban of an unknown type, the mode change is
|
|
processed normally. Furthermore, extended bans of an unknown type can always be
|
|
listed or removed.
|
|
|
|
The ability to send to a channel is cached; this cache may not be updated
|
|
if a condition for an extended ban changes. To work around this, part and
|
|
rejoin the channel, or add or remove a +b, +q or +e entry.
|
|
|
|
The extban types that come with charybdis are:
|
|
|
|
extb_account.so
|
|
$a
|
|
matches all logged in users
|
|
$a:<mask>
|
|
matches users logged in with a username matching the mask (* and ? wildcards)
|
|
|
|
extb_channel.so
|
|
$c:<channel>
|
|
matches users who are on the given channel; this is only valid if the channel
|
|
exists and is not +s or +p. (The ops of the channel the ban is on cannot
|
|
necessarily see whether the user is in the target channel, so it should not
|
|
influence whether they can join either.)
|
|
|
|
extb_oper.so
|
|
$o
|
|
matches opers (most useful with +I)
|
|
|
|
extb_realname.so
|
|
$r:<mask>
|
|
matches users with a realname (gecos) matching the mask (* and ? wildcards);
|
|
this can only be used with +b and +q
|
|
|
|
extb_server.so
|
|
$s:<mask>
|
|
matches users connected to a server matching the mask (* and ? wildcards);
|
|
this can only be used with +b and +q
|
|
|
|
Comparisons:
|
|
|
|
+b $~a is similar to +r but also prevents not logged in users talking or
|
|
changing their nick while on channel.
|
|
|
|
+iI $o is the same as +O in dreamforge-derived ircds.
|
|
|
|
Creating extban types:
|
|
|
|
extban_table, indexed by the extban character, contains function pointers
|
|
of the following type:
|
|
typedef int (*ExtbanFunc)(const char *data, struct Client *client_p,
|
|
struct Channel *chptr, long mode_type);
|
|
|
|
The arguments are as follows:
|
|
data: the text after the colon, NULL if there was no colon
|
|
client_p: the client to check; this is always a local client, which may be
|
|
on or off channel
|
|
chptr: the channel
|
|
mode_type: CHFL_BAN, CHFL_QUIET, CHFL_EXCEPTION or CHFL_INVEX
|
|
|
|
The return value:
|
|
EXTBAN_INVALID: the mask is invalid, it never matches even if negated and
|
|
cannot be added; if this is returned for one client_p it must be returned
|
|
for all
|
|
EXTBAN_NOMATCH: the client_p does not match the mask
|
|
EXTBAN_MATCH: the client_p matches the mask
|
|
|
|
The function is called whenever a (local) client needs to be checked against
|
|
a +bqeI entry of the given extban type, and whenever a local client tries to
|
|
add such an entry. (Clients are allowed to add bans matching themselves.)
|
|
|
|
--
|
|
$Id: extban.txt 1639 2006-06-04 23:26:47Z jilles $
|